...yesterday, while celebrating Chinese New Year was first and foremost in my mind, (what better excuse to order Chinese food?), it had apparently been Justin Timberlake's birthday, and a special event to celebrate it was held by Magnolia Bakery. Apparently, those who brought MasterCards to Magnolia Bakery retail space were entitled to one free cupcake in honor of Justin Timberlake's birthday!
from GrubStreet:

All you have to do is present your MasterCard, apparently, and Magnolia Bakery will give you a free cupcake, because the occasion of Justin Timberlake's birthday (he's 33 today) is best marked with buttercream. Sadly, there haven't yet been any sightings of JT in a giant cupcake suit outside the West Village bakery singing "Bring it on down to Cupcakeville," but the night is young. [Bedford + Bowery, Related]